Margarita Blankenheim (Miku) is married to Marquis Kaspar Blankenheim (KAITO). She knows that he's only married to her for her wealth but claims that she doesn't care as long as she can be with him. Eventually, she makes him medicine to "relieve him of all his stress", and later decides that since everyone has troubles, the whole town should try her "gift". As it turns out, her "gift" to the townspeople was poison. Her husbands horrible treatment of her had driven her to the point of lunacy and she wanted everyone to die. She then drinks her own poison, finally falling asleep herself.
At the end of the PV, a dialogue between Elluka Clockworker and Gumillia is shown, hinting the relationship of Margarita Blankenheim and Julia Abelard with Père Noël.